diff --git a/arch/arm/dts/uniphier-ph1-ld11-ref.dts b/arch/arm/dts/uniphier-ph1-ld11-ref.dts
index 4eb7664a9e..ca31026738 100644
--- a/arch/arm/dts/uniphier-ph1-ld11-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld11-ref.dts
@@ -70,3 +70,7 @@
 &pinctrl_uart0 {
 	u-boot,dm-pre-reloc;
 };
+
+&pinctrl_system_bus {
+	u-boot,dm-pre-reloc;
+};
diff --git a/arch/arm/dts/uniphier-ph1-ld20-ref.dts b/arch/arm/dts/uniphier-ph1-ld20-ref.dts
index 90c8705fff..e4e8d76749 100644
--- a/arch/arm/dts/uniphier-ph1-ld20-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld20-ref.dts
@@ -58,3 +58,7 @@
 &pinctrl_uart0 {
 	u-boot,dm-pre-reloc;
 };
+
+&pinctrl_system_bus {
+	u-boot,dm-pre-reloc;
+};